TWI656869B - Waterproof cushion preparation method and structure thereof - Google Patents

Abstract

A waterproof seat cushion preparation method and structure thereof, wherein an elastic cloth, a TPU film and an independent air chamber foam are laminated and bonded, and heated to a set temperature by a heating device to soften and easily become a flexible material. And then placed in a vacuum mold device, vacuuming, after cooling, forming an upper cover body, wherein the top cover of the upper cover has a buttock positioning surface, and the bottom surface of the upper cover is formed with at least one capacity a space is disposed, and a filling material is placed in the accommodating space, and a waterproof material capable of completely covering the bottom surface of the upper cover body is coupled to the bottom surface of the upper cover body, so that the cover body having the filling material can be combined with The waterproof material is combined to form a seat cushion having a washable and waterproof effect.

Description

Waterproof cushion preparation method and structure thereof

The invention relates to a waterproof seat cushion preparation method and a structure thereof, in particular to a seat positioning surface on the top surface of a seat cushion, so that a person with reduced mobility can sit stably on the seat cushion, and once the patient accidentally squats on the seat cushion, A method and a structure for preparing a waterproof cushion for directly cleaning a seat cushion.

For patients with mobility problems, wheelchairs are a convenient and convenient means of transportation. However, the handrails of existing wheelchairs are generally fixed structures fixed to the seat to provide the hand of the wheelchair user, but because the handrail of the existing wheelchair is fixed, when the patient lifts the toilet from the wheelchair, It is often hindered and is not conducive to entry and exit, so patients may fall into a wheelchair because they have no time to get up. Therefore, it is necessary to have waterproof function on the wheelchair cushion.

In order to make patients with mobility problems more comfortable to sit in a wheelchair, there are wheelchair cushions for sale, and the wheelchair cushions sold by the workshops are mostly smooth at the top surface, without any hip positioning structure, and need to be seated in a wheelchair. Patients often have problems with the spine skew, so they can't sit on the wheelchair cushion like a normal person, which makes the patient feel inconvenient in sitting position, so that the patient can not sit comfortably on the wheelchair cushion, or even fall into the wheelchair. In addition, the change should have a sitting posture, causing the spine to be more severe, resulting in the injury of other diseases.

Furthermore, patients in wheelchairs are generally inconvenient in their actions, and sometimes they accidentally squat on the cushions. Currently, wheelchair cushions sold in the market are not incapable of being disassembled and cleaned, or The coating layer is coated with a foam liner. When cleaning, the coating layer can only be removed and cleaned, and the foam liner cannot be cleaned. The foam liner will absorb water and cause damage through cleaning, which affects the original function. The single cleaning coating can not achieve the most effective cleaning effect, because the foam liner has absorbed the dirt of the toilet, and the entire wheelchair cushion is easy to hide dirt, and continues to produce odor, which is quite unsanitary, if at this time The patient chooses to discard the cushion and re-purchase it, which will increase the economic burden on the patient.

Therefore, if you can design a wheelchair that can be easily cleaned and hygienic, and can stabilize the wheelchair patient, it will not be free to move. It should be a design of the urgency.

The invention relates to a method for preparing a waterproof cushion for a wheelchair, which comprises: laminating an elastic cloth, a TPU film and a separate air chamber foam, the elastic cloth is located on the top layer, and the TPU film is located in the middle layer, The independent air chamber foam is located on the bottom layer and is softened and heated into a flexible material by a heating device; the flexible material is placed in a vacuum mold device, and the flexible material is vacuumed and adsorbed. Forming an upper cover body, after the cooling is formed, the top cover of the upper cover body has a buttock positioning surface, and the bottom surface of the upper cover body is formed with at least one accommodating space; then, a filling material is placed thereon In the accommodating space, a waterproof material is closely adhered to the bottom surface of the upper cover body, and the waterproof material can completely cover the bottom surface of the upper cover body to achieve waterproofing, so that the cover body having the filling material can be combined with the waterproof material. Become a cushion with waterproof effect.

In a preferred embodiment, the heating device is an oven having a heating temperature of 120 to 180 degrees and a heating time of 30 seconds to 2 minutes.

In a preferred embodiment, the elastic cloth has a thickness of 0.1-0.5 mm, the TPU (Thermo plastic poly urethane) film has a thickness of 20-150 μm, and the thickness of the independent air chamber foam is 3-10mm.

In a preferred embodiment, the independent gas cell foam has a foaming ratio of 3 to 40 times.

In a preferred embodiment, the waterproof material is provided with a waterproof, intimate joint between the waterproof material and the bottom surface of the upper cover body by means of sewing, hot-melting, ultrasonic or high-frequency techniques.

In a preferred embodiment, the filling material is made of a foamed material, a memory foam, a synthetic foam or a latex foam.

In a preferred embodiment, the buttock positioning surface is a concave or front concave low rear concave arc surface.

In a preferred embodiment, the independent air chamber foam may be a chemical bridging foam or an electronic bridging foam.

A wheelchair waterproof seat preparation structure comprises: an upper cover body, wherein the upper cover system is formed by laminating an elastic cloth, a TPU film and an independent air chamber foam through an adhesive, wherein the elastic cloth is The top layer, the TPU film is located in the middle layer, the independent air chamber foaming system is located on the bottom layer, the top surface of the upper cover body has a buttock positioning surface, and the upper cover body has a surrounding side wall, so that the bottom surface of the upper cover body is formed At least one accommodating space; a filling material, the filling material is received in the accommodating space of the upper cover; to fill the accommodating space; a waterproof material, the waterproof material is coupled to the bottom surface of the upper cover In order to close the upper cover body, the sealing is completely waterproof, so that the filling material is stably placed in the accommodating space of the upper cover body.

In a preferred embodiment, the buttocking surface is combined with at least one shock absorbing body, and the shock absorbing system is a waterproof covering covering a gel material or a silicone material.

In a preferred embodiment, the waterproof material is further bonded with at least one anti-slip element on the outwardly facing surface.

In a preferred embodiment, the filler material is selected from one of a foamed material, a memory foam, a synthetic foam, or a latex foam, or a combination thereof.

In a preferred embodiment, the buttock positioning surface is a notch or a front lower rear high concave arc surface.

1‧‧‧Flexible materials

11‧‧‧elastic cloth

12‧‧‧TPU film

13‧‧‧Independent air chamber foam

2‧‧‧adhesive

3‧‧‧Upper cover

31‧‧‧Hip positioning surface

311‧‧‧ accommodating space

32‧‧‧ accommodating space

4‧‧‧Filling materials

5‧‧‧Waterproof material

51‧‧‧Slip-proof components

6‧‧‧ Shock Absorbing Body

61‧‧‧Waterproof covering

62‧‧‧gel material

7‧‧‧Users

81‧‧‧Add equipment

82‧‧‧ Vacuum mold equipment

[Fig. 1] is a schematic flow chart of a method for preparing a waterproof cushion of the present invention and a structure thereof.

[Fig. 2A to 2E] is a schematic view showing the preparation method of the waterproof cushion of the present invention and the structure thereof.

[Fig. 3A-3B] is a schematic view showing another embodiment of the method for producing a waterproof cushion of the present invention and the structure thereof.

[Fig. 4] Fig. 4 is a schematic view showing another embodiment of a method for producing a waterproof cushion of the present invention and a structure thereof.

[Fig. 5A, B] is a schematic view showing another embodiment of the method for preparing a waterproof cushion of the present invention and the structure thereof.

Other details, features, and advantages of the present invention will be apparent from the following description of the preferred embodiments.

Please refer to FIG. 1 , which is a schematic flow chart of a method for preparing a waterproof seat cushion according to the present invention and a structure thereof. The steps are as follows: (1) an elastic cloth, a TPU (Thermo plastic poly urethane) film and an independent gas. The chamber foams are laminated, the elastic cloth is located on the top layer, the TPU film is located in the middle layer, and the independent air chamber foam is located on the bottom layer, and is heated in a heating device to soften it into a flexible material, the heating The device can be an oven with a heating temperature of 120 to 180 degrees and a heating time of 30 seconds to 2 minutes 101; (2) placing the flexible material in a vacuum mold device, vacuuming the flexible material, and after cooling, forming a top cover body, wherein the top surface of the upper cover body is Forming a buttock positioning surface, the buttock positioning space may be a notch, and the bottom surface of the upper cover body is formed with at least one accommodating space 102; the TPU film has waterproof property and elasticity, and the independent air chamber foam body The utility model has the independent bubble which is not connected to the air chamber, and is light and waterproof. After the TPU film is bonded to the independent air chamber foam, the elastic cloth is adhered to the TPU film, so that the top surface has the comfortable and beautiful feeling of the weaving cloth; Furthermore, since the surface of the independent gas cell foam is not smooth and is not easily adsorbed on the inner wall surface of the mold, it is required to have a smooth surface property of the TPU film, and the elastic cloth itself is gas permeable and has high tensile properties. The independent air chamber foam can be vacuum-adsorbed on the inner wall surface of the mold and adsorbed, and the independent air chamber foam has a certain degree of stiffness and water tightness, so that it is not easy to collapse and deform after molding; (3) after that, Will one The filling material is placed in the accommodating space, and a waterproof material is seamlessly joined to the bottom surface of the upper cover body, and the waterproof material can completely cover the bottom surface of the upper cover body, so that the cover body having the filling material can be combined with The waterproof material is combined to form a seat cushion 103 having a waterproof effect.

Please refer to FIG. 2A to FIG. 2E , which is a preparation structure of the present invention, mainly comprising an upper cover 3 , as shown in FIGS. 2A and 2B , the upper cover 3 is composed of an elastic cloth 11 , a TPU film 12 and An independent air chamber foam 13 is formed by laminating an adhesive film, wherein the elastic cloth 11 is a top layer, the TPU film is located at an intermediate layer, and the independent air chamber foam 13 is located at the bottom layer, and The upper cover body is heated into a flexible material by a heating device 81, as shown in FIG. 2A, and the flexible material is placed in a vacuum mold device 82. The top surface of the upper cover body 3 has a buttocks. a positioning surface 31, the buttock positioning surface 31 can be a notch, and the bottom surface of the upper cover 3 is formed with at least one accommodating space 32; as shown in FIG. 2C, a filling material 4 is used (the filling material is Foaming material, record Retaining foam, synthetic foam or latex foam) is placed in the accommodating space 32, and then, as shown in FIG. 2D, a waterproof material 5 is joined to the bottom surface of the upper cover 3, and the The waterproof material 5 must be able to completely cover the bottom surface of the upper cover body, and can be seamlessly connected between the waterproof material 5 and the bottom surface of the upper cover body 3 by means of a zipper, a sewing, a hot melt, an ultrasonic wave or a high-frequency technique. Engaging; finally, as shown in FIG. 2E, the edge material of the upper cover 3 is cut off to form a seat cushion having a waterproof effect.

In addition, as shown in FIGS. 3A and 3B, when the vacuum is formed and shaped into the upper cover 3, the space 311 can be more concave in the buttock positioning surface 31, and the positioning space 311 is more capable. An shock absorbing and dissipating body 6 is disposed, and the absorbing and absorbing body 6 is made of a waterproof covering 61 coated with a gel material 62 or a silicone material.

Further, as shown in Fig. 4, at least one anti-slip element 51 can be further joined to the outer surface of the waterproof material 5.

In addition, as shown in FIG. 5A and FIG. B, it is another schematic diagram of the present invention, wherein the buttock positioning surface 31 can be a front high and a low concave arc surface, so that the buttocks of the user 7 can be positioned in the concave arc. On the surface, it will not move freely, so that the user 7 can sit safely, and the upper body spine can be straighter, which is good for breathing, and does not need to be troubled by antifouling, waterproofing and cleaning, and the choice of cloth can increase the appearance without having to Adding a jacket saves the cost of the jacket, and other structures are the same as those in Figures 1 to 4, and are not described here.

The elastic cloth is stretchable left and right (X-axis), stretched forward and backward (Y-axis), that is, the X-axis or the Y-axis can be stretched, or at least one of the one-way stretchable.

The elastic cloth may be a woven fabric in which a yarn is woven into a yarn, and a stretchable woven fabric; or a knitted fabric obtained by knitting a false twisted yarn.

The elastic cloth has a thickness of 0.1 to 0.5 mm, and the thickness of the TPU film is 20-150 μm, the thickness of the independent air chamber foam is 3-10 mm.

The height of the upper cover 3 can be defined by the height of the vacuum mold device, so that the elastic cloth can be stretched to its height.

The foaming ratio of the above independent cell foam is 3 to 40 times.

The above independent cell foam may be an electronic cross-linked foam (EPE Foam or EPP Foam) or a chemical cross-linked foam (XPE Foam or XPP Foam).

The waterproof seat cushion preparation method and structure thereof provided by the invention are compared with other conventional techniques, and the advantages thereof are as follows:

(1) The invention has full waterproof property, so that the patient accidentally rubs the object without infiltrating into the inner filling material, and only remains on the surface of the upper cover body or the waterproof material, and the user can directly rinse with water to achieve convenient cleaning and The purpose of hygiene.

(2) The upper cover body of the present invention is provided with a buttock positioning surface, so that the patient can sit stably on the upper cover body without being arbitrarily displaced, and maintain a stable sitting posture, and then foam by the independent air chamber of the upper cover body. The stable support of the body and the shock absorption and pressure of the filling material allow the wheelchair patient to sit on the cushion without any discomfort, and achieve a stable and comfortable effect.

(3) The upper cover of the present invention is directly molded by vacuum molding, so that there is no sewing thread or fusion line on the surface, so that the skin of the wheelchair patient does not be stitched or welded for a long time. Friction creates an uncomfortable feeling.

(4) The present invention can be combined with a shock absorbing and compressing body on the hip positioning surface, and then reinforce the pressure released by the patient's buttocks to make the sitting more comfortable.

(5) The present invention has waterproof property and elasticity by a TPU (Thermoplastic polyurethane film) film, and the independent gas cell foam has a plurality of independent bubbles which are not connected to the gas chamber, and is light in weight and Waterproof and airtight, the TPU film is bonded to the independent air chamber foam, and then the elastic cloth is bonded to the TPU film, so that the top surface has a comfortable and beautiful feeling of the woven fabric.

(6) The upper cover body of the present invention is mainly formed by laminating independent bubble foam, TPU and elastic cloth. For the purpose of waterproofing and vacuum forming, the three-layer material is indispensable because of the independent air chamber foaming. The surface of the body is not smooth and is not easily adsorbed and adhered to the inner wall surface of the vacuum mold device. Therefore, the surface of the TPU film needs to be smooth and waterproof and elastic, and the elastic cloth itself is breathable and has high tensile properties; therefore, when When the upper cover body which is heated to form a flexible material is placed in the vacuum mold apparatus, since the vacuum mold apparatus has a certain wall height (thickness), the elastic cloth and the TPU film have high tensile strength when the vacuum is started. Sexuality, so the independent bubble foam is moved to the inner wall surface of the vacuum mold device, and then closely adheres to the inner wall surface of the vacuuming device, so that the height of the vacuum mold device is the shape of the upper cover body. The height, and the elastic cloth can be baked and bonded to the TPU film and the three-layer foam foam to a degree of flexibility, that is, it is easy to stretch to the mold height to form the thickness of the upper cover. Moreover, the independent air chamber foaming system is cross-linked foaming, so it is not torn during the stretching process, and has independent air bubbles, and has certain stiffness and water tightness, so that it has good supporting force after molding. Provides good support for the user and is not easy to collapse.

(7) The present invention can be applied to a wheelchair, so that the wheelchair patient can sit on the seat cushion safely and comfortably, and the buttocks are stably restricted by the positioning surface of the buttocks, and do not move at will, and if the accident occurs, the stool can be The entire seat cushion is cleaned without any residue of dirt, which can be reused.

Through the description of each of the above-mentioned effects, it can be known that the manufacturing process of the present invention and the molded product are not found in the currently marketed products and publicly available materials, so that the patent novelty; and the present invention is more It can solve the shortcoming that the conventional seat cushion can not be directly cleaned and the cerebral palsy patient or polio patient or other patients with limited mobility can not sit stably on the seat cushion. The invention allows the patient to sit safely and make the upper body better. Straight, is conducive to breathing, and does not have to be troubled by anti-fouling, waterproofing and cleaning, and the choice of cloth can increase the appearance without having to add a jacket, and save the cost of the jacket, therefore, it has patent progress.

The present invention has been disclosed in the above embodiments, and is not intended to limit the present invention. Any of those skilled in the art can understand the foregoing technical features and embodiments of the present invention without departing from the invention. In the spirit and scope, the scope of patent protection of the present invention is subject to the definition of the claims attached to the present specification.

Claims (9)

The invention relates to a method for preparing a waterproof cushion, which comprises: laminating an elastic cloth, a TPU (Thermoplastic polyurethane film) film and a separate air chamber foam, the elastic cloth is located on the top layer, and the TPU film is located in the middle layer. The independent air chamber foam is located on the bottom layer and is softened by heating to a flexible material by a heating device. The thickness of the elastic cloth is 0.1-0.5 mm, and the thickness of the TPU film is 20-150 μm. The thickness of the foam is 3-10 mm; the flexible material is placed in a vacuum mold device, and the flexible material is vacuumed and shaped into an upper cover body, which is to be cooled and molded. The top cover of the upper cover has a buttock positioning surface, and the bottom surface of the upper cover body is formed with at least one accommodating space; after that, a filling material is placed in the accommodating space, and then is closely attached to the bottom surface of the upper cover body. There is a waterproof material, and the waterproof material can completely cover the bottom surface of the upper cover body to achieve waterproofing, so that the cover body having the filling material can be combined with the waterproof material to form a seat cushion having a waterproof effect. The method for preparing a waterproof cushion according to claim 1, wherein the heating device is an oven, and the heating temperature is 120 to 180 degrees, and the heating time is 30 seconds to 2 minutes. The method for preparing a waterproof cushion according to claim 1, wherein the independent air chamber foam has a foaming ratio of 3 to 40 times. The method for preparing a waterproof cushion according to claim 1, wherein the buttock positioning surface is a concave or front concave high surface. The method for preparing a waterproof cushion according to claim 1, wherein the independent air chamber foaming system is a chemical bridging foam or an electronic bridging foam. A waterproof cushion preparation structure comprising: An upper cover system is formed by laminating an elastic cloth, a TPU film and a separate air chamber foam through an adhesive, wherein the elastic cloth is a top layer, and the TPU film is located in the middle layer The independent air chamber foaming system is located on the bottom layer, the top surface of the upper cover body has a buttock positioning surface, and the upper cover body has a surrounding side wall, so that the bottom surface of the upper cover body is formed with at least one accommodating space, and the elasticity The thickness of the cloth is 0.1~0.5mm, the thickness of the TPU film is 20-150μm, and the thickness of the independent air chamber foam is 3-10mm; a filling material is accommodated in the capacity of the upper cover body The space is filled; the waterproof space is combined with the bottom surface of the upper cover body to close the upper cover body, the closure is completely waterproof, and the filling material is stably placed on the upper cover body. Set the space. The waterproof cushion preparation structure according to claim 6, wherein the buttocks positioning surface is combined with at least one shock absorbing and compressing body, and the shock absorbing and diffusing system is a waterproof covering body coated with a gel material or a squeegee material. The waterproof cushion preparation structure according to claim 6, wherein the waterproof material is further combined with at least one anti-slip element on the outwardly facing surface. The waterproof cushion preparation structure according to claim 6, wherein the buttock positioning surface is a concave or front concave high surface concave arc surface.